1. Department of Psychology, University of Manitoba, Winnipeg, Canada
2. Department of Anesthesiology, Perioperative and Pain Medicine, University of Manitoba, Winnipeg, Canada
3. Department of Clinical Health Psychology, University of Manitoba, Winnipeg, Canada
4. Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA
5. U.S. Department of Veteran Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, CT, USA
6. Department of Psychiatry, University of Manitoba, Winnipeg, Canada